Donald Trump’s doctor Harold Bornstein is a bizarre character. But the story behind him has been getting stranger every day ever since he gave an interview recently, explaining why he declared that Trump would be the healthiest president in history.

Bornstein said in the interview that he created the doctor letter in just about five minutes, when he declared that Trump would be healtheir than all of the 43 presidents who came before him. He actually had a limousine waiting for him outside when he wrote it, according to media reports.

“I thought about it all day and at the end, I get rushed, and I get anxious when I get rushed,” Bornstein told NBC News. “So I try to get four or five lines down as fast as possible so that they would be happy. I’ve got five minutes to sit right at this desk and write that letter while the driver waited for me.”

So take the health appraisal with a grain of salt — Trump is after all 70 years old and unlikely to be healthier than even much younger presidents who came before him. And it certainly reads like something Trump himself would write.

Bornstein used words and phrases like “astonishingly excellent” and “extraordinary” to refer to Trump’s health. That’s certainly not a typical thing for a doctor to say about any patient, let along a 70-year-old man.

“If elected, Mr. Trump, I can state unequivocally, will be the healthiest individual ever elected to the presidency,” Bornstein added.

Bornstein told NBC News that yes, indeed, he does sound a bit like Trump — perhaps because he’s around him so much and has found himself influenced by that type of language.

Here’s the exchange:

NBC NEWS: Is that the way that you write most of your medical letters?

BORNSTEIN: No, but for Mr. Trump, I wrote that letter that way.

NBC NEWS: Did he ask you to describe it that way? Or do you pick up his kind of language by spending time with him?

BORNSTEIN: I think I probably picked up his kind of language and then just interpreted it to my own.